import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate'
import Params from './components/goods/Params'

Vue.use(Router)
const router=new Router({
  routes: [
    {
      path:'/',
      redirect:'/login'
    },
    {
      path:'/login',
      component:Login
    },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children:[
        {
          path:'/welcome',
          component:Welcome
        },
        {
          path:'/users',
          component:Users
        },
        {
          path:'/rights',
          component:Rights
        },
        {
          path:'/roles',
          component:Roles
        },
        {
          path:'/categories',
          component:Cate
        },
        {
          path:'/params',
          component:Params
        },

      ]
    },


  ]
})
//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  //to 将要访问的路径
  //from 从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next() 放行  next('/login') 强制跳转
  if(to.path === '/login') return next()
  //获取token
  const token=window.sessionStorage.getItem('token');
  if(!token){
    return next('/login')
  } else {
    next()
  }
})
export default router
